* [PATCH v2 1/2] m33xx-clock: configure PLLs based on oscillator frequency
@ 2013-04-18 9:47 Jan Luebbe
2013-04-18 9:47 ` [PATCH v2 2/2] m33xx-clock: remove unused code Jan Luebbe
0 siblings, 1 reply; 2+ messages in thread
From: Jan Luebbe @ 2013-04-18 9:47 UTC (permalink / raw)
To: barebox
The *PLL_N values can be calculated from the OSC value. This patch
includes no functional change.
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
changes from v1:
* add change description (sha)
* add spaces around operator (sha)
* split off patch to remove unused code
arch/arm/mach-omap/include/mach/am33xx-clock.h | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap/include/mach/am33xx-clock.h b/arch/arm/mach-omap/include/mach/am33xx-clock.h
index 39c107f..cf4c921 100644
--- a/arch/arm/mach-omap/include/mach/am33xx-clock.h
+++ b/arch/arm/mach-omap/include/mach/am33xx-clock.h
@@ -31,12 +31,12 @@
#define MPUPLL_M_600 600 /* 125 * n */
#define MPUPLL_M_720 720 /* 125 * n */
-#define MPUPLL_N 23 /* (n -1 ) */
+#define MPUPLL_N (OSC - 1)
#define MPUPLL_M2 1
/* Core PLL Fdll = 1 GHZ, */
#define COREPLL_M 1000 /* 125 * n */
-#define COREPLL_N 23 /* (n -1 ) */
+#define COREPLL_N (OSC - 1)
#define COREPLL_M4 10 /* CORE_CLKOUTM4 = 200 MHZ */
#define COREPLL_M5 8 /* CORE_CLKOUTM5 = 250 MHZ */
@@ -48,7 +48,7 @@
* For clkout = 192 MHZ, Fdll = 960 MHZ, divider values are given below
*/
#define PERPLL_M 960
-#define PERPLL_N 23
+#define PERPLL_N (OSC - 1)
#define PERPLL_M2 5
/* DDR Freq is 166 MHZ for now*/
@@ -60,7 +60,7 @@
#define DDRPLL_M 266
#endif
-#define DDRPLL_N 23
+#define DDRPLL_N (OSC - 1)
#define DDRPLL_M2 1
/* PRCM */
--
1.8.2.rc2
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^ permalink raw reply [flat|nested] 2+ messages in thread* [PATCH v2 2/2] m33xx-clock: remove unused code
2013-04-18 9:47 [PATCH v2 1/2] m33xx-clock: configure PLLs based on oscillator frequency Jan Luebbe
@ 2013-04-18 9:47 ` Jan Luebbe
0 siblings, 0 replies; 2+ messages in thread
From: Jan Luebbe @ 2013-04-18 9:47 UTC (permalink / raw)
To: barebox
This patch includes no functional change. If a configurable DDRPLL_M
is required later, it should be set by the board instead of from here.
Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
arch/arm/mach-omap/include/mach/am33xx-clock.h | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/arch/arm/mach-omap/include/mach/am33xx-clock.h b/arch/arm/mach-omap/include/mach/am33xx-clock.h
index cf4c921..028df43 100644
--- a/arch/arm/mach-omap/include/mach/am33xx-clock.h
+++ b/arch/arm/mach-omap/include/mach/am33xx-clock.h
@@ -51,15 +51,9 @@
#define PERPLL_N (OSC - 1)
#define PERPLL_M2 5
-/* DDR Freq is 166 MHZ for now*/
+/* DDR Freq is 266 MHZ for now*/
/* Set Fdll = 400 MHZ , Fdll = M * 2 * CLKINP/ N + 1; clkout = Fdll /(2 * M2) */
-//#if (CONFIG_AM335X_EVM_IS_13x13 == 1)
-#if 0
-#define DDRPLL_M 166 /* M/N + 1 = 25/3 */
-#else
#define DDRPLL_M 266
-#endif
-
#define DDRPLL_N (OSC - 1)
#define DDRPLL_M2 1
--
1.8.2.rc2
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^ permalink raw reply [flat|nested] 2+ messages in thread
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